Device for controlling windows of the vertically sliding type



May 17, 1932. O w, YOUNG 1,858,319

DEVICE FOR CONTROLLING WINDOWS OF THE VERTICALILY SLIDING TYPE FiledSept. 15, 1931 2 Sheets-Sheet 1- Erma [tor L 4 Cttt ornem W. YOUNG May17, 1932.

DEVICE FOR CONTROLLING WINDOWS OF THE VERTICALLLY SLIDING TYPE FiIedSept. 15, 1931 2 Sheets-Sheet 2 Patented May 17, 1932 UNITED SATES PANTFEGE WILLIAM YOUNG, OF CARLUKR'SCOTLAND Application filed September 15,1931, Serial No. 562,963, and in Great Britain September 3, 1930.

My present invention relates to improvements in devices for controllingwindows of the slidabl-e type used in passenger vehicles, ships and inother well known devices, and

has for an object to provide a simple and eflicient spring balance thatcan be used with varying weights of windows, and where the springpressure is readily controlled so that the reaction of the balancingeffect is practically constant throughout the travel of the window.

Another feature of the present invention is to provide a means forautomatically checking or braking the movement of the window at anydesired position, and holding the same firmly whereby the possibility ofthe window rattling is eliminated.

With the foregoing and other objects in View, my invention will be morefully described hereinafter, and will be more particularly pointed outin the claims.

In the drawings, wherein like symbols refer to like or correspondingparts throughoutthe several views,

Figure 1 is a front elevation of the improved window controlling devicewherein a pair of levers are used,

Figure 2 is a horizontal section alongthe line 2-2 of Figure 1 showingthe device in plan on'an enlarged scale.

Figure 3 is a vertical section along the line 33 in Figure l,

Figure 4; is a vertical section along the line H in Figure 1,

Figure 5 is a front elevation with parts broken away and parts shown insection of a modified form of the device wherein two pairs of levers areused,

Figure 6 is a horizontal section along the line 66 of Figure 5 showingthe modified form in plan, I

Figure 7 is a front elevation of the device as shown in Figure 5 withthe window in a lowered position,

Figure 8 is a fragmentary detail View showing a modified form of windowbrake, and

Figure 9 is a vertical section along the line 9-9 in Figure 8. 7

Referring more particularly to Figs. 1 to 4 of the drawings, A and Bshow a pair of levers, which are pivotally connected together at one endby the pin 0. The other end of the lever A is enlarged in the form of adisc A, and is pivotally mounted upon the stud or collar cl, which isattached to the plate D or made integral therewith. The plate D isconnected, to the garnish rail E of the motor body or other suitablepart of the window frame.

The other end of the lever B has fastened thereto by riveting orotherwise a plate B whereby to pivotally'mount the same upon the pin Bto the bracket F, which has its upper and front edges preferablyflanged. This upper flange affords a means of attaching the bracket F tothe channel or frame G, which is secured to the pane of glass along thelower edge of the window sash H. The plate B carries the pin' or stud Bfor pivotally mounting the rod I, which projects through a slot J formedin the flange along the front edge of the bracket F. A compressionspring K is mounted upon the rod I and confined between the front flangeof the bracket F, and the adjusting nuts L on the outer screw threadedend of the rod 1. With the spring K as shown the force exerted by thespring K will swing the lever B in a downward direction.

The automatic check or brake (see Fig. 3) comprises the friction disc Mof fibre or other suitablematerial, and is pivotally mounted upon thefixed stud d carried by the plate D to abut and to register with thedisc-shaped end A of the lever A. Adjacent the friction discM and alsopivotally mounted upon the I fixed stud (Z is another disc N having anupwardly projecting arm which is shaped to form an arcuate cam N. A pinA is secured to the interior of the stud d, and projects outwardly topivotally mount the spring disc P, which presses against the outer discN. The nut O on the outer end of the pin A engages the spring disc P topress the same forwardly, and cause the discs N and M along with thedisc-shaped end A of the lever A i to be held tightly together. Thearcuate cam N forming'part of the discN engages the end of the pin T,and is adjustably held in the off-set portion R forming the centralportion of the bar R. The outer ends R of the bar R are reduced andshaped to carry the friction rollers or pads Q, of rubber or othersuitable material. Adjacent the outer ends R are attached the upper endsof the flexible spring strips S, which extend downwardly and have theirlower ends secured to the plate D. These spring strips S support the barR, and urge the rollers Q, in a direction to bind against the window.

In the operation of the device with the parts as shown in Figure 1, ifit is desirous to lower the window H, the force exerted to move thewindow downwardly will also carry-the lever B, pivotally attached to thewindow channel, in a likewise direction. The lever A, pivoted at C toone end of the lever B, and having its other end suitably mounted torotate about the plate D, which is fixed to the garnish rail E, or othersuitable part of the window frame, will allow the levers to swing aboutthe pivot C and spread them apart in scissor fashion.

Since the spring K tends to rock the outer end of the lever Bdownwardly, the other end, which is mounted to pivot about the pin B,will exert an upward pressure on the window. Thus it is seen I provide asimple spring counterbalance which gives a constant action during thetravel of the window, and can readily be applied to varying weights ofwindows.

The movement of the lever A will cause its disc-shaped end A along withthe friction disc M, and the outer disc N, which are tightly pressedtogether by the spring P, to rotate in unison. The rotary movement givento the disc N will likewise move the cam N, and force the pin Tforwardly along with the bar R to overcome the pressure exerted in theopposite direction by the spring strips S. This action will immediatelyrelease the friction rollers Q, from engaging the window H and allow thesash to travel downward-1y. After the cam N has been moved a slightdistance whereby to force the pin T forwardly, the spring strips Sresist further movement, and only the disc-shaped end A of the lever Arotates. When it is desired to stop the window in the downward travel, aslight upward force given to the window will reverse the rotation of thedisc-shaped end A of the lever A, and cause the friction disc M, alongwith the outer disc N, to all rotate in unison. The cam N will move andrelease the pressure against the spring strips S and thus the frictionrollers Q, will automatically be pressed against the glass, and hold thewindow sash H firmly in position.

The travel of the window sash H in the upward direction is accomplishedby the reverse movement as above described.

Referring to Figures 5, 6 and 7, I have shown a slightly modifiedconstruction in which I have used two pairs of levers with separatesprings for counter-balancing each pair of levers, and an automaticbrake in connection therewith to check or hold the windows in thedesired position. This form shows duplicate pairs of levers A and BSince the construction and operation of each pair of levers is the same,only a single pair will be described. Levers A and B are pivotallyconnected together at one end by the pin C. The other end of the lever Bis pivotally mounted to the bracket F, which is fixed to the lower edgeof the window sash H.

The other end of the lever A supports a disc A and carries therectangular block Z2, which is to secured to the pin (5 and rotates withit. A bearing is supported by the plate D which is riveted to thegarnish rail. The pin (Z is supported by hearing 0 and projectsoutwardly therefrom at each end. On the projecting end of the pin clwhich supports the block I) and the disc A carried by the lever A aremounted the fibre disc M, the disc N with its cam N the disc spring Pand the adjusting nut O. The disc spring P operates as in the otherconstruction to tightly press these parts together and yet allow theseparts to rotate. The cam N engages, as in the former construction, thepin 1 T which is adjustably held to the spring strip S. This springstrip S is secured at its lower end to the plate D and has fastened atits upper end the yoke S which carries the friction roller Q, to engagethe window H.

The other projecting end of the pin d has fixed thereto a rectangularblock I) which supports the cam block a whereby these parts can allrotate in unison. The cam block a coacts witha similarly mounted camblock to operate springs NV, whereby the pairs of levers A and B aregiven a constant counterbalance pressure. Each of the springs W ishoused in a tube U, which is held in alinement at its inner end by theadjusting ring U with a duplicate tube U, and its associated parts.Suitable bearings V are fixed to the plate D and the tubes U wherebythese parts are held in the desired position. The right and left handscrew threaded studs Z and Z are made integral with the ring U, whichmay be rotated by inserting a tool into the sockets u. These screwthreaded studs Z and Z support the travelling nuts or collars Y and Y,which are prevented from rotation by the pins or screws y mounted in thecollars Y and Y to engage the elongated slots in the tubes U.

One of the springs W has one end engaging the travelling collar Y andthe opposite end bearing against the inner face of the cap X, which ismounted to slide on the outer end of the tube U. The cam block a isplaced to operate as shown adjacent the outer face of the cap X.

It is obvious in operating this form of the device that the operation ispractically the same as the one previously described. The movement ofthe window sash H will cause the pairs of levers A and B to spread inscissor-fashion, and force the discs A carried on the ends of the leversA to rotate along with the cam blocks a.

Since the springs \V are mounted to exert an outwardly pressure on thecam blocks a, this force will give the levers A an upward pressure andthus act to provide a constant counterbalance during the travel of thewindow H. The rotation of the discs A fixed to the levers A will alsorotate the cam N as previously described to automatically operate thefriction rollers Q,

In Figures 8 and 9 I have shown a slightly modified form of window brakein which the pin cl is rotated as formerly with the cam block a and thedisc N The disc N carries the projecting arm N and is mounted to contactwith the spring strip S and upon being rotated will force the stripoutward along with the friction roller Q to release the window sash. Apin (Z is fixed to the garnish rail E, and enters the slot or opening nin the arm N whereby to limit the movement of the arm N It will beobvious that various changes may be made in the construction,combination and arrangement of parts, which could be used withoutdeparting from the spirit of my invention, and I do not mean to limitthe invention to such details, except as particularly pointed out in theclaims.

Having thus described my invention, what I claim and desire to secure byLetters Patent of the United States is:

1. The combination with a window frame and a sash slidable therein,levers having pivotal connections with said window frame and sash, astop for the sash mounted on the window frame, a cam for releasing thestop, cam actuating means supported by the window frame and adapted toengage said levers whereby to permit holding the sash in fixed position,and also to permit releasing the sash to slide, and spring tensionedmeans associated with the levers adapted to hold said levers in balancedposition during the sliding of the sash.

2. A sash stop and automatic operating means therefor, comprising a bar,yieldable means attached to the bar and adapted for holding the same tothe window frame, friction rollers carried by the bar to engage thesash, levers adapted to be pivotally connected with the sash and windowframe, a cam connected between the bar and the levers, said levers beingoperative by movement of the sash to release the friction rollers fromthe sash upon the initial movement of the latter, cam actuating meanscontrolled by said levers for retaining the friction rollers releasedduring further movement of the sash, and spring tensioned meansassociated with the levers adapted to hold said levers in balancedposition during the sliding of the sash.

3. A sash stop and automatic operating means therefor, comprising stopsfor said sash, a plurality of pivoted levers alined in oppositelydisposed pairs and adapted to be pivotally connected with the windowframe and sash, cams connected between the stops and the levers, saidlevers operative by movement of the sash to release the stops upon theinitial movement of the sash, a tube adapted to be mounted on the windowframe,

spring tensioned caps carried by said tube,

and cam blocks carried by said levers to engage the spring tensionedcaps whereby to hold the levers in balanced position during the slidingof the sash.

WILLIAM YOUNG.

